CN214042270U - KVM switch based on Type-C port - Google Patents
KVM switch based on Type-C port Download PDFInfo
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- CN214042270U CN214042270U CN202120222401.7U CN202120222401U CN214042270U CN 214042270 U CN214042270 U CN 214042270U CN 202120222401 U CN202120222401 U CN 202120222401U CN 214042270 U CN214042270 U CN 214042270U
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Abstract
The utility model provides a KVM switch based on Type-C port, include: the device comprises a user port, a TYPE-C port, a video output port, a USB hub module, a USB bus module, a video conversion module, a video switching module and a main control module. The utility model discloses can simplify the line with outside host computer equipment, transmit video, control and USB data signal simultaneously, improve the compatibility to keyboard and mouse, promote user experience.
Description
Technical Field
The utility model belongs to the technical field of the computer equipment technique and specifically relates to a KVM switch based on Type-C port.
Background
A KVM switch (Keyboard Video Mouse) is a Keyboard, a display, and a Mouse, and is used to control a plurality of devices, so as to implement centralized management of system devices. The existing KVM switcher has single function, is complex to connect with a host device, has tolerance to a keyboard and □, is difficult to transmit video, control and USB data signals simultaneously, and influences user experience.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a KVM switch based on Type-C port can simplify the line with outside host computer equipment, and video, control and USB data signal are transmitted simultaneously, improve keyboard and □ standard compatibility, promote user experience.
The utility model discloses a following technical scheme realizes:
a KVM switch based on Type-C port, comprising:
the user port is used for receiving user control signals and transmitting data;
a plurality of TYPE-C ports for connecting a plurality of external host devices;
the video output port is used for connecting an external display device;
the USB hub modules are respectively connected with the USB data pins of the TYPE-C ports and used for integrating control and data signals transmitted through a USB line;
the USB bus module is respectively connected with the user port and the plurality of USB hub modules and is used for forming a control and data transmission channel transmitted by a USB line;
the video conversion modules are respectively and correspondingly connected with the video data pins of each TYPE-C port and used for converting video signals input by external host equipment into video signals matched with the video output ports;
the video switching module is respectively connected with each video conversion module and the video output port and is used for switching video signals from different video conversion modules to be output to the video output port; and
and the main control module is respectively connected with the USB bus module and the video switching module and is used for controlling the output of the video switching module according to a user control signal.
Further, the utility model provides an among the KVM switch based on Type-C port, the user port is including the first USB interface that is used for connecting keyboard and mouse to and be used for connecting the second USB interface of standard USB equipment.
Further, the utility model provides an among the KVM switch based on Type-C port, USB bus module includes USB bus switch, USB main equipment machine and a plurality of USB slave unit machine, USB bus switch connects the second USB interface, USB bus switch connects each respectively USB line concentration module, USB main equipment machine connects first USB interface, each USB line concentration module is equallyd divide and is do not connected two USB slave unit machine, USB main equipment machine passes through SPI bus connection to each USB slave unit machine, USB main equipment machine connects the USB bus switch, USB main equipment machine connects master control module.
Further, the utility model provides an among the KVM switch based on Type-C port, video output port is the HDMI interface.
Further, the utility model provides an among the KVM switch based on Type-C port, the video conversion module is including the TYPE-C audio and video separation circuit and the converting circuit who connects gradually.
The utility model has the advantages that:
through the utility model discloses, the user can select to control arbitrary outside host computer connected to select arbitrary outside host computer to show, realize the function of KVM switch. Furthermore, the utility model provides a KVM switch based on Type-C port still has following characteristics: (1) the TYPE-C port is connected with external host equipment, one TYPE-C port can complete video transmission and can complete transmission of control signals and USB data, and connection with the external host equipment is simplified; (2) the USB data and the control signal can be transmitted while the video data is transmitted, so that the use is convenient; (3) the mouse and the keyboard can be controlled by the external host in a data transparent transmission mode, so that the compatibility of the KVM switcher to the mouse and the keyboard is improved; (4) the USB data and the control signal of the user can be respectively transmitted, and the use convenience is improved.
Drawings
Fig. 1 is a schematic structural view of a first embodiment of the present invention;
FIG. 2 is a schematic diagram of the USB bus module structure and its connection with other modules according to the present invention;
fig. 3 is a schematic structural diagram of a second embodiment of the present invention.
Detailed Description
For a more clear and complete description of the technical solution of the present invention, the following description is made with reference to the accompanying drawings.
Referring to fig. 1, the present invention provides a first embodiment of a KVM switch based on Type-C port, which comprises a user port, a Type-C port, a video output port, a USB hub module, a USB bus module, a video conversion module, a video switching module, and a main control module. The user port is used for receiving user control signals and transmitting data. The TYPE-C ports are multiple and are used for connecting a plurality of external host devices. The video output port is used for connecting an external display device. The USB hub modules are connected with the USB data pins of the TYPE-C ports respectively and used for integrating control and data signals transmitted through a USB line. The USB bus module is respectively connected with the user port and the plurality of USB hub modules and is used for forming a control channel and a data transmission channel which are transmitted through a USB line. The video conversion modules are respectively connected with the video data pins of each TYPE-C port correspondingly and used for converting video signals input by external host equipment into video signals matched with the video output ports. And the video switching module is respectively connected with each video conversion module and the video output port and is used for switching the video signals from different video conversion modules to be output to the video output port. The main control module is respectively connected with the USB bus module and the video switching module and is used for controlling the output of the video switching module according to the user control signal.
In this embodiment, the KVM switch is connected to the external host device through the TYPE-C port, and one TYPE-C port can complete video transmission as well as transmission of the control signal and the USB data, thereby simplifying connection with the external host device. In addition, the video conversion module and the video switching module that the video signal that transmit is connected by the video data pin with TYPE-C port export to the video output port, and control signal and USB data that transmit then transmit to the user port with USB bus module by the USB line concentration module that the USB data pin of TYPE-C port is connected, because video data and USB data are respectively through different module and line transmission, both are not disturbed, therefore the utility model discloses a KVM switch can realize transmitting USB data and control signal when transmitting video data, has made things convenient for the use.
Further, referring to fig. 2, the user port includes a first USB interface for connecting a keyboard and a mouse, and a second USB interface for connecting a standard USB device.
Further, referring to fig. 2, the USB bus module includes a USB bus switch, a USB master device and a plurality of USB slave devices, the USB bus switch is connected to the second USB interface, the USB bus switch is connected to each USB hub module, the USB master device is connected to the first USB interface, each USB hub module is connected to two USB slave devices, the USB master device is connected to each USB slave device through an SPI bus, the USB master device is connected to the USB bus switch, and the USB master device is connected to the master control module.
In this embodiment, data generated by the mouse and the keyboard accessed by the first USB interface may be transmitted to the external host through the USB host, the USB slave, the USB hub module and the TYPE-C port, the USB host selects the USB slave to be connected through the SPI communication protocol, and the USB slave may simulate a mouse or a keyboard interface with respect to the external host connected to the TYPE-C port. Therefore, the utility model discloses can realize that mouse, keyboard control outside host computer with the mode that data pass through, this has improved the compatibility of KVM switch to mouse, keyboard. In addition, data transmitted by standard USB equipment accessed by the second USB interface can be connected to each USB hub module through the USB bus switcher, and then transmitted to an external equipment host through the TYPE-C port, and the USB equipment host can control the switching of the USB bus switcher according to a user instruction. Therefore, the utility model discloses the standard USB equipment accessible that connects to user port is connected to USB line concentration module with the different transmission path of mouse or keyboard, can realize the USB data and the difference transmission of control signal to the user, has improved the convenience in use.
Further, in some embodiments, the USB hub module may be implemented using a USB hub chip, such as model FE1.1S.
Further, in some embodiments, the USB host device may be implemented using a chip such as model CH 559.
Further, in some embodiments, the USB slave device may be implemented using a chip, such as a chip with model CH 552.
Further, in some embodiments, the USB bus switch may be implemented using an optional chip such as a PI5C3253 multiplexer.
Further, the standard USB device accessed by the second USB interface may be any device supporting USB2.0 or USB3.x series protocols.
Further, referring to fig. 3, the present invention provides a second embodiment of a KVM switch based on a Type-C port, wherein the video output port is an HDMI interface.
Further, referring to fig. 3, the video conversion module includes an audio/video separation circuit and a conversion circuit connected in sequence.
In this embodiment, the video signal of the external device host is sequentially transmitted to the external display device through the TYPE-C port, the audio/video separation circuit, the conversion circuit, the video switching module, and the HDMI port, and the video switching module can switch any external host to display under the control of the main control module. The audio and video separation circuit is used for extracting audio and video signals from the TYPE-C port, and the conversion circuit is used for converting the extracted audio and video signals into HDMI signals.
Of course, the present invention can also have other various embodiments, and based on the embodiments, those skilled in the art can obtain other embodiments without any creative work, and all of them belong to the protection scope of the present invention.
Claims (5)
1. A KVM switch based on Type-C port, comprising:
the user port is used for receiving user control signals and transmitting data;
a plurality of TYPE-C ports for connecting a plurality of external host devices;
the video output port is used for connecting an external display device;
the USB hub modules are respectively connected with the USB data pins of the TYPE-C ports and used for integrating control and data signals transmitted through a USB line;
the USB bus module is respectively connected with the user port and the plurality of USB hub modules and is used for forming a control and data transmission channel transmitted by a USB line;
the video conversion modules are respectively and correspondingly connected with the video data pins of each TYPE-C port and used for converting video signals input by external host equipment into video signals matched with the video output ports;
the video switching module is respectively connected with each video conversion module and the video output port and is used for switching video signals from different video conversion modules to be output to the video output port; and
and the main control module is respectively connected with the USB bus module and the video switching module and is used for controlling the output of the video switching module according to a user control signal.
2. The Type-C port based KVM switch according to claim 1, wherein the user port comprises a first USB interface for connecting a keyboard and a mouse and a second USB interface for connecting standard USB devices.
3. The Type-C port based KVM switch according to claim 2, wherein said USB bus module comprises a USB bus switch, a USB host and a plurality of USB slave, said USB bus switch is connected to said second USB interface, said USB bus switch is connected to each of said USB hub modules, said USB host is connected to said first USB interface, each of said USB hub modules is connected to two of said USB slave, said USB host is connected to each of said USB slave through SPI bus, said USB host is connected to said USB bus switch, and said USB host is connected to said master control module.
4. The Type-C port based KVM switch according to claim 1, wherein the video output port is an HDMI interface.
5. The Type-C port based KVM switch according to claim 4, wherein the video conversion module comprises a TYPE-C audio and video separation circuit and a conversion circuit connected in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202120222401.7U CN214042270U (en) | 2021-01-25 | 2021-01-25 | KVM switch based on Type-C port |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120222401.7U CN214042270U (en) | 2021-01-25 | 2021-01-25 | KVM switch based on Type-C port |
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| CN214042270U true CN214042270U (en) | 2021-08-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115494972A (en) * | 2022-09-26 | 2022-12-20 | 深圳市湘凡科技有限公司 | KVM switcher with data inter-copying function |
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2021
- 2021-01-25 CN CN202120222401.7U patent/CN214042270U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115494972A (en) * | 2022-09-26 | 2022-12-20 | 深圳市湘凡科技有限公司 | KVM switcher with data inter-copying function |
| CN115494972B (en) * | 2022-09-26 | 2023-12-29 | 深圳市湘凡科技有限公司 | KVM switch with data cross copy function |
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